a(n) = A163617(A110240(n)) = A110240(n) OR 2*A110240(n).

Terms

a(0) =3a(1) =15a(2) =59a(3) =255a(4) =947a(5) =4095a(6) =15131a(7) =65407a(8) =242627a(9) =1048271a(10) =3874811a(11) =16743551a(12) =62119411a(13) =268369791a(14) =991927259a(15) =4286447359a(16) =15902689155a(17) =68701773199a(18) =253935222715